Mechanical adding device.



Wresses: A

IC. H. MARTINEAU.

NIECHNCM. ADDING EWL APPucArloN man M^rz3,19o's.

,324:,460. Patented Dec. 9, 19H).

13 SHEETS-SNEL] l.

c.,R. MARUNEAU.

MEGHANlCAL ADDING DEVICE.

APPLICATION flLiD MAY23.190E.

1,324,460.' Patented Dec. 9,1919.

I3 SHEETS-SHEET 2.

ff 303 Q c. RA MARHNEAU.'

MECHANICAL ADDING DEVICE.

APPLICATION FILED MAY 23. 1906.

Patented Dec. 9, 1919.

I3 SHEETS-SHEET 3.

Sm QW m.

C. H. MARTINEAU.

MECHANICAL ADDING DEVICE.

APP'LICATIoN FILED IIIAY 23. 1906.

Patented Dec. 9, 1919.

' I3 sains-SHEET 4.

'(2. R. MARIINEAU. MECHANICAL ADDING DEVICE. APPLxcAnoN FILED mwzansos.

um ma ,.v m 9 l.. 1I|I||| HIL. ..||I|I...I... II IIIIIII 11 i 9 m l au 1 n s ILL H L C MMT 1|.- l M m a Maw 73 G G E 5 I mm /r n IM n .n .M P A l 4 I a J A m 3 v IiA IHVEHTOR WITHEnnE C. R. II/IARTINIAU'.I MECHANICAL ADDING DEVICE.

APPLICATION min Muze. 190s.

1,324,460. 'Patented Dec. 9,1919.

I3 SHEETS-SHEET 6.

C. R MARTINEAU.

MECHANICAL ooms Device.

APPLICATION FILED MAY 23,1906.

' 1,324,460. Patented Dec. (J, i912).

' l/cu 01 5MM mw www.

R. MARHNEAU. mec-HA'MCAL ADDING nEvlcE.

APPKICATION FILO MM Patented D60. 9,1919

13 SHEETS-SHEET 8.

C. R. MABUNEAU. MECHAMCAL ADDING DEVCE.

APPLICAUON man MAY 23. i996.

1,324,460. Patented Dec. 9,1919.

- xs sHeTs-suen s.

tf1 VENTOR QWLQLLMQMJLMM @mili/76M,

mikem/wup C. R. MARTINEAU. MECHANICAL ADD|NG DEVICE. APPucmoN when MAY 23.1sns.

` mvEHToR Patented Dec. 9,1919.

23 SHEETS-SHEET l0- V i .W1 Llw C58. MARTINEAU.

MECHANICAL ADDING uEvwE.

APPLICATIQN FILED MAY 23. 190B.

Patented bei'. t), 11H9.

I3 SHEETS-SHEET Il,

wlTHg; E: 5

W 8 mVEHTOR f /m/mw C. R. MARHNEA'U.

MECHANICAL ADDING DEVICE. APPLICATION FILED MM 23.1906.V

1 ,$24,460. Patented Dee. 9,1919.

I3 SHEETS-SHEET I 2.

MO TOI? H Pif- 1 'z *f4* .x 15o *T4-L l5@ 145 |49 169 5a H 55 .a J i 1 I III.L 5I 6o ,6. n my H H WfTH 55555 Y IHVEHTOR C. R. MARTINEAU. MECHANICAL ADDING DEI/ICE.

APPLICATION NEED MAYZS. l906 Patented DDD. 9,1919.

13 SHEETS-SHEET I3 wrmssscb onrrnn sin-miss PATENT OFFICE.

CLARENCE a. MARTINEAU. be sINeEnLANns, New YoaKf Asszenon, BY' MESNE ASSIGNMENTS, To Jol-1N T. UNDERWoon, or BROOKLYN, NEW Yom;

MECHANICAL ADDING DEVICE.

Specification of Letters Patent.

Patented Dec. 9, 1919.

Application fin-.a May 23, 190s. serial nu. 315,400.

To all whom. may concern:

Be it known that I, CLARENCE R. MAR- TINEAU, a citizen of the United States, resid-` ing'at Slingerlands, in the county of Albany and State of New York, have invented eertain new and useful Improvements in Mechanical Adding Devices, of which the rfollowing is a specification- My invention relates to devices for mechanically adding figures placed upon a paper by a typewiiting machine, and t'or producing and indicating the footing or footings in such, manner that the operator can see and copy the same upon the paper. .l

The| application of the typewriting machine to the adding device, in such a manner vthat it may be removed when desired and another typewriting machine ot different make substituted therefor, forms a part of my invention.

` Of the many objects of my invention, attention is especially directed to the following: y

1st: To provide un improved adding device which may be used in connection with a typewriting machine, whereby the footing or footings of one or more sets of figures written on the typewriting machine shall he mechanically displayed in such a position that the operator may copy the saine upon the paper.

2nd: To provide an improved adding device adapted to be used with a typewriting machine, in which the number keys of the typewriting machine, when operated upon, will mechanically operate the adding apparatus. and the addition or additions made will -be displayed to the operator` 3rd: The production of an improved Fadding device adapted! to' be. connected with a typewritirgmachine, in Vwhich theadding Wheels and' connections may be moved laterally? 'across the machine, Figs. 1. 2 and 6 i'n'such a mannerthat the figures to be adde may .be placed 1n such column or position on theVA :iper as maybe desired. 4th: ilhe production yof an improved addi ing device `whereby the kg connections bey 0' tween Vth'e addin' bars; and the typewriter'levers, C,y ig. 6, may be breiten by mechanism controlled by a throw-ont key- 31-7, so 'es toperr'nit operation of the typewriter, independently' e' the adder, or so cushioning a that the adding machine may be operated by an independent set of numeral keys, 132.

5th: To produce a tabulating device in connection with an adding machine, whereby the columns of 'figures to be added may be placed on the paper in any position desired by the operator without the-operator havingl to shift its position on the platen of the tvpewriting machine, Figs. 1 and 6.

6th: To provide an improved adding device which may be operated by hand or electrically drivenj 7th To provide-an improved addin machine which may be operated indepen Vently oi' thc typewriter. l i p 'logether with such other elementsY and combinations as are' hereinafter more particularly set forth. y

l accomplish these objects by means of the mechanism illustrated in the accompanying drawings, .n which:

1 igure 1 is a plan of the adding or computing device.

ligg. 2 i a front elevation thereof'.

Eig. 3 is '.1 plan and section of a gear 6. (Sheet four.)

Fig. #l is a perspective view of a zero setting key, K

Fig. 5 is a rear elevation of the machine.. (Sheet three.) y

Fig. `(l is a side elevation thereof, parts being omitted.

Fig. T is a reverse plan view of the bottom of the' machine.

Fig; S is a section, with parts broken away, through :i rack, 6i, showing an indicator, 69, and means 'for retaining the saine in a slot 70. (Sheet four.)

Fig. 9 is a perspective view of a rack carrier or guide irrwhich racks, P, are movable. (Sheet six.) l

Fi 10 isy a detail view of a connecting bar, having a U-shaped upper end.

Fig. 11 is a modified perspective view of Van anti-friction device. u

""Fig. 12 is a side elevation of a device for 'key stroke.

Fig. 1311s an end View of the rack carrier.

Fig. 13x is a view showing a'inodiied form of key connection between an adding' device key and a typewriter ke -Fi s. 14(Sheet sevenl, lend 17 (Sheet einfht are-side views of dierent positions ofbthe carry mechanisnnsesV Fig. 15 is a plan of the carry mechanism shown in Fig. 14.

Fig. 18 shows a tion. (Sheet six.)

Figs. 1S), 2O and 21 are side viewsof one of the pin frames, M, showing diterent friction devices for holding pins, 0, in p0- sition.

F ig. 22 is an end view of a pin frame, M.

Fig. Q3 is a perspective view of a denominational stop, 102, of the tabulating device.

Figs. 24 and 25 are side views of portions V', V, and lV, shown in )erspective in connection with an adding W eel in Fig. 26, and showing the different positions of the parts in the operation of the adding Wheel.

Fig. 2G is a perspective view of an adding Wheel, Q, and shaft, V.

- Fig. 27 is a perspective View of a bar, 7 5, havin an arm, 7G, and projections, 78 and 79. Sheet seven.)

Fig. 28 is a perspective view of a locking point, 72, having a slot T3, therein.

Fig. 29 is a perspective view of a latch, 71, having a locking device, 80, a lug, 81, and an indentation, 90.

Figs. 30, 31, 32, 33 and 34 are views showin a modified forni of carry mechanisn'i friction spring in elevadoiiig away with the springs 74.

Fig. 35 is a perspective view of a pin frame, M. .Y

Fig. 36 'is a perspective of a guard, 82, with its sleeve, 83. A

Fig. 37 is a perspective view, showing one of the frames of the machine, J, a driving bar, R, to operate the pin frames, M, a pin restoring` bar, R, a beveled error bar, 55, a. pin frame restoring bar, 58, flattened shafts, gears and guard 82, to aid in the carry operation, andan operating rack bar, U, with hook, R, attached.

Fig. 38 is a perspective of a movable nest carrying adding wheels and connections.

Fig. 39 is a plan of, an electrical drive mechanism.

Fig. 40 is an end elevation of Fig. 39.'

Fig. ,-11 is a side elevation of a modified form of computing device, including escapeinent mechanism.

Fig. 42 is a plan of the escapeinent mechanism shown in F ig. 41.

Similar letters refer to similar parts throughout the several views. n

I referably mount the parts of my adding device in a suitable frame and secure the typewriting machine to the top of the saine, by means of suitable supports attached to or forming art of said frame, upon which the feet of t e typewriter rest, and to which they may be readily secured. I provide a series of vertical bars which maybe placed in positions to be engaged and moved by those t pewriter bars which carry the nurnbei printing types. These vertical bars are connected with mechanisixi through which,

when operated, they will tend to provide for the pmper degree of rotation of the adding wheels. whciimovement is given to the adding mechanism by means hereinafter particularly set forth.

f In order that the ty )ewriting machine and the adding device shalll act. in unison, l connect the carriage ot' the typewriting niachine to a series of gears which mesh with the rack to which is attached the adding machine carriage carryingr the tubnlating stop. 10T, Fig. ti, ot' the adding mechanism. Ut' coin-se. in operating a typewriter in which the carriage moves from right to leit it is necessary, in ordeigthat the tahulations of the adding machine shall be the saine as the writing on the iaper, that the carriage of the adding machine should move roiii left to right, directly opposite to the direction ot' the movement of the typewriting machine carriage. This is provided for in my machine by connecting the carriage ot' the typewriting machine with a rack engaging the top of two ears moving in the saine direction, and the ottoni of said gears engaging with the rack/attached to the carriage of the adding machine.

The adding wheels are preferably mounted near the front of the machine, Where they can be readily seen by the operator, and have the figures from zero to nine arranged upon projections, preferably, on the eripheries of the Wheels, respectively. he

wheels are, preferably, spaced for dollars,.

cents, thousands, etc., and they are set in motion by a series of racks engaging them. The limit of their motion is detern'nned by lthe position of pins carried by a frame at0 tached to each rack, respectively, so that when one of the pins is depressed, the rackI engaging with its adding wheel can only move a distance depending upon the position of that pin in the frame.

I will now proceed to more particularly describe my machine and its connections in reference to the drawings.

A typewriting machine, A, rests upon the posts, B, B, and is secured thereto in `any suitable manner. The typewriter type-bar levers, C, which carry the number printing types. en age with the vertical bars, D, and rest in -shaped yokes in their tops, see Figs. 6 and 10. There Would therefore, be preferably nine bars, D, extending across the machine, and I preferably make the bar, D, in two parts, as shown in Fig. 10, in which the U-shaped portion is attached by means of a suita le screw, d, to the lowerpart of the bar, the opening in the U-shaped portion, D, being elongated for the purpose of ad justing the length of the bar, if desired, al*- thoug I do not limi-t myself to this construction. The bars, D, pass through slots, respectively, in the plate, 118,- secured at each. side of the machine to the frame, 100",

the ends of each of the bars being, respectively, secured to one end ot' a corresponding bell crank level', E, sec Fig. (i. The bell crank levers are pivoted at their angles on a shaft, F. The opposite end of each bell crank lever, E, is secured to a link, G, which is connected to one of the drivers, H. Each of said drivers is provided with a projecting lug, h, to which said link, (i, is attached, and capable of a slight rotary movement forward and downward when the bell crank lever is rocked by the depression of the bar, D. The drivers, H, extend across the machine from one side to the other. and are provided at each end with a small rounded portion, L, which fits and is movable within one of a series of openings i'n one of the supports, J, fl, which extend along each side of the Inachine, (see Fig. 1). i

Each of the drivers, H, is' adapted to engage one of a series of preferably nine pins, L, which are mounted in the adding machine carriage, Ntsee Figs. 16 and 17). Each of the pins', L, is preferably provided with `a shouldei'-, I, against which `one end of ya coil spring, ll', rests, the other en`d of said spring engaging with the lower portion of that part of the carriage, N, in which the pins, L, are placed, the action of the spring tending tp raise the pin after the driver, ll, has pressed it down.

l place about the shaft; F, on which the hell crank levers, E, are pivoted, springs, E', so adjusted that th resiliency of each spring will force its bar. D.`npward after the finger has been removed from th(` typewriter key,

and at the same time raise the driver to its' normal position, y

the carriage. moves from one side of the machine to kthe other, see Figs. l1, (i, 16, and li'. the pins. L. will pass over and above a series of pins. (l, placed in pin frames, M, which pin trames are cach attached, by means of an arm, 0', and link. 02. to a rack, P,

which engages one of the adding wheels, Q., respectively. lVhen one of the pins, L, is depressed by a driver, H, as shown in Fig. 16, it will cause one of the pins, O, to be projected beneath itsv pin frame, M. This pin will then be in the path of movement of a rack advancing bar, R, which extends across the machine, and is brought forward, in -a manner hereinafter more fully expllained by pulling pn either of the hooks arrange( yon eacl side of the machine, sce Figs. 1.,' 6 auditif, and which bar will then engage the pin,0, and cause the rack, P, attached to ts pin frame to'move forward, and therebLi7 rotate the, adding wheel. The amount ,of rotation of the adding wheel depends, asl is apparent, upon the position of the pin,0, in the frame..M

In Fig. 17, the bar, R, is shown in contact with the pin, 0, which has beendepressed; the rack, P, is shown in contact with the adding wheel, Q; and the forward movement ot' the bar, R, has necessarily caused the adding wheel. Q, to rotate in the direction of the arrow. The figures, numerals, or characters,upon the periphery of the adding wheels, are so arranged, in reference to thc said pins, O, that the depressed pin will cause the adding wheel. (assuming that it originally-stands at lzero) to he moved to a position such as to exhibit a numeral corresponding to that of the number key of the typewriter, through the depression of which the pin was Set.

It is, of course. necessary o arrange for forcing the pins, back into the frame, M, after the adding wheel has been rotated to its proper position. rThis is accomplished by means of a bar, i', Figs. 1', 7 and 37 extending across the machine from one side to the, other, the ends of which may be caused to move along the inclined portions, i", i", of the elongated slots, r, r2. in the blocks, R2, R`-, attached to the driving rack bars, U, ll. at each side of the machine', and as a result of which the bar, r. may be caused to rise and restorethe pins in the frames, in a man..er which will be more fully described.

In the normal position of the mechanism, the ends of the bar, r, will rest in the elongated slots, r2, r2, forward of the inclined portions, r', as illustrated in Fig. 6.

As clearly illustrated 4in Fig. 37, the pinrestoring bar, r, is pivoted to a lug extending -from the rear of the rack-admncing bar'lR. This rack-advancing bar. R. and a rackrestoring bar. 58, are connected by the two side bars R3, R3, so as to form a selfcontained orV` rigid register driving frame,

which may be moved as a unit in a forward and backward direction relative to the machine frame. Provision for such movement is atlorded by passing the ends of hars R and 5S through slots in the machine frames J. J. and securing their ends to the bars R3. R3. just without said frames. Shoulders 58, 5R', may be provided in the u'ppcr walls of said slots to limit the rearward movement of the driving' frame and thus determine its normal position.

For reasons which will hereinafter be explained. the forward and rearward movements of the bars, R. fr'. and should not be conmu'nsurate with the movements of the rack bars. ll. U, but said bars, U, U, should Yfirst be permitted to move a material distance before picking up the ba'rs, R, i', and 58. To effect such delayed movement, each end -of the bar 58 is extended, as at 58, 582, so as to be alternatelyengaeed by the fronts U2, U2, of the blocks Rz, andby lugs Il, U3, projecting from'the under sides of the rackbars U, U. 'As shown in Fig. 37; the barsR, r, and 58 are in their normal positions. The rack bars U U, are illus' trated'as having been started on their fol'- ward movements. Suc-h movements will not be connnunicated to the bars R, r, and 58 until the fronts U, U2, of the blocks R2, R2, engage the projections 582, 582, after which the rackbars U, U, and bars R, r, and 58 will move together to the limit of their forward movements. (ln return movement of the rack bars U, U, the bars R, r, and 58 will remain at rest in their forward positions until the lugs U, U, on the bars U, U, are moved back into engagement with the projections 582, 582, after which the bars R, r, and 58 will be returned by further rearward movement of the rack bars U, U, to their normal positions.

When theA rack bars, U, U, are first moved forward, the inclines r', Ar', will be moved out from under the ends of the bar, r, and as the rack bars U, U, are continued i-n their forward movements, the bar, fr, will be impelled forward, but because of its position in the rear ends of the slots, r2, r2, it will pass beneath thedepressed pins in the pin frames. After the completion ofthe forward movement, any of the set pins O, in the frames M, will be lined up immediately in front of the rack advancing bar R and directly over the pin-restoring bar r, as indicated 1n Fig. 17. Upon the return of the rack bars after the rotation of the adding wheels, the inclines, r', r', will first be forced under the ends of the bar, r, thus raising the bar into the slots r2, r2, and causing the bar, r, to rise and press the pins back into the frames.

I also provide a means for restoring the pins in the frame after they have been de pressed, Without moving the rack bars, U, U, und, therefore, the adding wheels, for the purpose of correcting an error made in striking the keys prematurely or erroneously. This is accomplished by means of the sliding beveled bar, 55, 5, 7 and 37) in the carriage, N, beneath the frame, M, so positioned that it will engage any pins that muy be depressed. The beveled bar, 55, is slidably supported in the carriage. N, by the flanges, 56, on each side of the lower portion thereof, fitting into corresponding grooves in the side of the carriage. Fig. 37. The ends of the bar, 55, engage the cross bar, 1", and the bar 58, which extend across the machine, and are secured to the side bars R3, R3, so as to constitute a driving frame, as hereinbefore described. 0n movement of the carriage N from side to side, the bar, 55, will be carried therewith, its ends moving along the surfaces of the bars, r. and 58. Un forward and rearward movement of the hars R, r, and 58, the bar, 55, will be caused to slide cndwise between the retaining flanges on the forwardly-projecting element of the carriage N. Then the pins, which have been erroneouslyY depressed. are to be replaced in their frames, a movepurpose of causing the pins to retain the" positions in which they are placed, either depressed or raised. Without soniethingv of* this kind they would be liable to drop. I have shown, in Fig. 18, one of these springs in elevation, hut I may use springs such as are shown in Fist. 19, comprising strips spring metal, o laced under and over tie pins, respectively, using perhaps three, or I may'use the form of spring shown at the left, Fig. 20, which is a wire bent about the pin, having one turn only around it. I do not linut myself, therefore, to any parmenlar construction of friction springs, as any means for gently "etaining the pin in position will accompl h the desired result.

For the purpos of guiding the racks, P, in their movcmen s backward and forward under the impulse of the bar, R, I provide, preferably, a rack-carrier comprlsing a series of rails, S, see Figs. 9, 18, and 38, between which the racks reciprocate, th rails, S, being preferably provided W' grooves, s. and ribs, e', which coperate with corresponding ribs and grooves, respec tively, of the racks, P. Each of the racks, P, is thus positively retained during its movement within the space between thel rails, S. The frames, M, are each provided, preferably near the ends of the upper portions thereof, with upwardly-extending T- shaped members, T, Fig. 35, movable Within grooves formed by the series of spaced bars, 99, (see 38), extending lengthwise of the maclune.

I arrange these frames, M, and racks, P, with 'their connections, side by side, placing within what may be termed a` nest, a series of eleven adding wheels, Q, and eleven racks, P, and eleven frames, M, Fig. 38. I thus have adding wheels which will show the cents and dollars, to any desired degree, up to billions, adjusting the space between the wheels to provide for the position of the decimal point. thousands, millions and billions. Of course` I do not limit myself to the number of these w'hcels or to their spacing as they may be arranged to suit the work to be performed.

One method of setting in motion my mechanism is to pull. forward one of the hooks, R', R. There is one hook, R, on cach side of the machine, which hooks are attached to the rack bars, U, Il. respectively. The rack bars U, U, are channel-shaped as shown at- 59, 59, Fig. 37, so as to provide T-shaped grooves, 60, 60, these grooved bars thus forming tracks to run on rollers 61, pivoted to the ends of spindles, GQ, secured to the machine frames. 'l. J. The rack hars U, U, are thus supported by and move upon the rollers, u1, in the T-shaped 2grooves 60, (see Figs. T and 3T). For the purpose of returning the rack hars after the \v have. heen drawn forward hy means of one of the hooks, R'. R', I place on one side of the machine, a sprinty secured at one end tothe frame of the machine. at u. and at the other end secured to one of the raek hars, U. U. if desired I may place a similar spring, or other suitable device. in the opposite side thereof. I doi not wish to limit myself to the particular mechanism for returning the rack bars .after they have heen drawn forward. The rack hars, Il, ll. are preferably provided. as shown in Fig. with teeth `ou the upper and lower surfaces thereof. 0n the right side of the machine, shown in Fig. 6, the teeth on the upper Surface ot' the rack bar engage the toothed wheel, 2. which. is keyed to or rigidly mounted upon a fiat'A tened Shaft, 4 (see Figs. 6, 16, 17 and 37j The other end of the Shaft, 4. has a hearing!- in the frame of the machine The lower teeth on the rack har U. on the right side of the machine, engage a toothed wheel. which is mounted upon a shaft, 5, sce Figs. 2, G and 37. On the opposite or left-hand side of the machine, the teeth ou the upper surface of the rack har engage the toothed wheel. 6. which is connected, hy alostn1otion coupling. to a flattened shaft. 7, (.see Figs. 6, 16, 17. and 37). and the lower teeth on the raek har l?, ou that side engage the toothed wheel similar to the wheel, 3, and. mounted upon the shaft..5. upon which the toothed wheel, 3, on the right side of the machine is mounted. Located in u position for engagementwith the lower teeth on the y rack har l', on the left Side of the machine near the front'thereof, Iis a pawl, 9, (see F igs. 6 and 37) which is eeeured or mounted upon a' flattened shaft, 8.

' It will thus he seen that upon the more U rotary and 6, and the Shaft, 8, and they bar R, will be brought forward to engage the pins pro jecting from the pin frame M. On fthe oom- I pletion of the stroke forward, the 'operator emores his hand from hook, R', the berg-58. engages shoulders 319, o n pin frames, M, and under the impulse of springU ali are returned to normal position, thefbar, r, sliding up inclines r', rtiduring theinitial part Yofithe return movement, and thps forcingA back pins, .0, that may have been projected. The fiattened shaft, 8, (see Ijigsu 1, 6, 14. 16, 17 and 37), extends` aerosshe front of the machine and is provided at one end thereof with the pawl, so located as to be engaged and moved hv the lowerV teeth .on

the, rack har, U, on that side of the machine during,r the initial portion of its forward movement. and thus causing a rotation of said shaft from the position indicated in Fig. '14 lo that indirated in Fig. 1T, so as to hriuplr the rounded portion of the shalt in eoutaet with the under surface of the rack earl'ier, comprisinglr the rails S. helweeu whirh the racks. l. slide, and so as to thus lift the racks. P, into engagement with the :hiding wheels, Q, prior to their forward moveiuents to rotate said wheels. (in the initial portion ot' the return morena-.ut of the ri'ak hars'l, l1, the pawl, E). will he engaged h r the nearest one ol' the lower teeth on the left-hand rank har and moved bark so as to impart aereturu rotation to said shaft 8, from the position indicated in Fig. 1i' to that indicated in Fig. 14. 'l'his serond rotation ot' the sha l't, H, causes the rack rarrier to he lowered to ita normal position in which the racha, l. aredisengaged from the number wheels, so that on the subsequent return movements of said rai-ks, the wheels will not he rotated, In order that the pawl. 9, mayy he positively engaged hy the lower teeth .of the leltfhand rack har l'. at eaeh alternate forward and haekward movement thereof, said pawl (hay he loosely connected to the Shaft S, hy means of a lost-motion couneetion so as to he permitted to have. a slight. rotative mo\'en1ent with respert thereto. and a light spring;f may he provided hetweeu said pawl and the machine frame, oi' sullieient strength to turn` the shaft S, hut tending to turn Said pawl toward a vertical' iosition. as far as may he permitted hy :saidA `ostanotion connection, so as to insure its engagement with tluI teeth of the rark har l', on luorenieutin either direction.

It may he observed that ou the forward movement of the rari.' hars lv, ll, the rotation of the Shaft, H, is etl'eeted het'orc'the raek-advaneing har, R, is pirked up and caused to more the racks. l. and that on the, return movement, of the rack hars ll. U, the return rotation of the shaft. 8, is again etteetefd before the rack-restoring har, 58, is picked up and caused to return the racks, l. The shaft, 5, and pinions 3, 3, engaging;` with racks on the lower sides of the. rack hars, U, U, provide means forra'using both of said rackhars to he moved forward uniformly, without-binding, on pulling either of the handles R.

(l, are preferably toothed, or provided' with a series of projections on their peripheries,

upon each of which, as hereinhefore stated,

the numerals or characters are placed, but one of these projections, Q, 1s longer than the others, that is, extends farther from the main bod),- of the wheel, so as to provide means for starting or initiating a "carry.

Although the adding;r wheels may at any time be returned to zero in the usual manner by adding tht` complement olr the number reviously acclunulated thereby, the t'ollowing described zero setting device may also be used for that purpose. 'l`he adding wheels are mounted upon a shaft, which shaft is normally stationary, and each adding wheel is provided with a ring, l", see `iigs. 24, 25 and 21S. which ring;r is provided with a lug, Y", and a recess, V3, and in the shaft, V, is mounted a movable unit, lV,

rwhich mav be caused to engage the lug. Y,

and thereby rotate said number wheel to its normal 0 position, when shaft, is rotated by means which will be described. llhen the wheels, Q, are moved b v the, racks, P, they will rotate upon the shaft, V, the movable unit, lV, passing the lug, V", idly. The shaft, V, is mounted in plates,.X, X, which form the frame or outside portion of the nest in which the adding wheels are contained, there being one such shaft for each nest, and upon a prolongation ot the V shaft, V, through the plate, X, on one side of the nest, is a gear, Y, (Fig. 2), which meshes with a-gear, Y, on a shaft, Y2, which extends across and to the let'tside of the machine, as shown in Fig. 2, and upon the end of which there is a suitable lug or pin, y, (Fig. l), which will engage with the recess, y', on the key, l, as shown in Fig. 4. Thus, by placing the key, K, upon the end of the shaft, Y2, and operatingr the same, the adding wheels, Q, may be turned to zero.

For the purpose ot movingr the nests of register mechanism from one side of the machine toward .the other, in order to be able to place the column ot' tigures upon the written page in any desired position and add the amounts written in such column, l place across thc machine two racks, one, (i3, near the rear of the machine. see Figs. 5 and 6, and the other, 64, just forward of the adding wheels near the front of the machine, (sec Fig. Engaging with the racks, G3 and (it, are the pinions, (i5 and 66, on the spindles G7, mounted in the frames of thc nests. For the urpose oi" operating the spindles, 67, I preiliirably square the ends thereof, 68, as shown in Figs. il and 38, which may be operated b v means of a key placedthereon. Thus, by rotating,r the spindlcs, 67. and their pinions, (i5 and 66, which mesh with the racks, 63 and 64, the nests will be caused to move transversely of the machine. The nests are supported by and movable along the shaft, 4, at the front of the machine, and in the rear they are supported by and movable along the upper portion of the rack, 63.

Upon the framework I place a scale 70,

shown in Fig. l, with indicators, (itl. movable iu a slot. see Fig. S. to indicate the desired position ot' the nest in reference to the page. lt is apparent that b v fixing,r the indicators in the position desired, the nests may be moved b v means ot' the pinions and spindles, aforesaid, to bring them, the nests, in proper position to cause the ligures to be registered. that are tylwwritten ip any dcsired place widthwise of the work-sheet. Any number wheel. Q, in either liest may be brought into register with any desired division on the scale. by first adjusting the index to that division and then adjusting the rest, until thc particular number wheel registers with the index. This scale agrees with the usual platen scale, so that a figure written in a certain position relativel \v to the platen scale will be added on that number wheel which has the same position relativelyY to the scale at Fig. l. v

For the, purpose ot making a cari-y," which it is necessary to provide for when one of the wheels passes from 9" to 0,7 so that. the next adjacent wheel will bc moved one step or projection forward, I have provided a series of latches 71, mounted on a spindle secured to the. sides of the nests and a series of locking points, 7:2, by means of which, and their connections, the adding wheels may be locked in position, released and moved forward, when a Carry is to be made. l

It is understood that in making the "carr v the adding wheel which is rotated beyond the nine must provide for moving the ncXt adding wheel on thc left one Space; therefore, the projection, y, of the adding wheel which engages the latch 71, causes thtJ point, 72, in engagement with the next adding wheel to the left to move that wheel one space, which may he accomplished under thtl influence of the. apparatus` adjusted and connected up as herein described.

See Figs. 14, 15, 16, 17, 37 and 3S.

In Fig. 238 it will be seen that there is a latch, 71, a locking mint, 72, and bar, 75. with arm. 7G, for eac i adding wheel, excepting the first wheel which only requires a latch, in order.to cil'cctr a carry on the wheel to the left. The first wheel is never operated under .inuencc of a carry mechanism, as the rack, P, alone, governs the movement of this wheel.

These latches, 71, locking points, 72, and bars, 75, with their arms, 7G, are placed side by side in the following order, a latch, 71, for the first wheel controls the bar, 75, which carries thereon a locking point. 72, which ioin't meshes with the second wheel to the left. The second wheel governs a latch, 71. which controls a bar. 75, carryingr a locking point 72. which meshes with the third wheel to the lett and so on across the nest.

The actual aummplishment of the carry les mechanism in its normal position.

only takes place on the. return movement of the racks, U, U. The, forward movement of the racks, U. U, positions the mechanism for a carry.

1n Fig. 37. it is elearlv shown that the action ot' the attened shafts. l. 7 and S. is controlled h v the gears. 2. t. and pau'hfl. and these are governed hy the forward and return movements of the rarks. l'. l'.

Figs. l-t and 1G represent two different positions in which the parts ol' the mechanism may he le l't at the completion ol' a eomput ing operation ot' the maehfine. and therefore ma)v eat-h he properly said to show the Fig. 14m-hows the relative positions in which the parta of the mechanism will he lel't after a computing operation whieh did not require a earry to be etl'eeted. Fig. 1G shows the relative positions in whieh the same parts will' be left after a computing operation whieh does` require a earry to he eti'eeted. In each o'l' these views the raelt. l. is illustrated as heilig ont. ot' engagement with the wheel. (d. and the loching point. 72. is shown in locking mesh with the adding wheel heing fort-ed in mesh h v spring 74. The flattened portion of' rotatable shaft. l. and the rear endot' slot. Til. are so related as to permit the lot-king point 7" to be 4moved t'or 'ard to its eli'eetive lot-king position. 'l`he lot-king point. 72. is slidahle on a har. 75. having an arm. 7G. drawn upward h a sprnle. 77. and foreed downward when yshaft. 7. is rotated. i'or the purpose,

of effecting an engagement between the lug. 7U. on the arm. 7S. ou tlu` har. 75. and a lug or projection. H0. on the latch. 7l. This interengagement hetween the latrli. 7l. and har. 75. is intended to prevent the spring. 77. from pulling the har. 75. upward in the rear against the llattened portion of' the shaft. 7. so as to therelrr move the loeking point downward. luntil atter a eomputing operation whieh eauses the long projection, 7. on adding wheel Q. to depress the latch. 71. so as to `break the engagement between the lugs. 79 and H0. and thereby initiate a Carry. Y Y

0n the rear of lateh. 71. is a lug. Sl. with an indentation. 90. which indentation ma)r be caused to engage and lock with a lug, 88.

`on the spring bar. 91. secured to a bar, 92,

which holds` the lateh. when oneedepressed. out of engagement. y

On the shaft. 7. at the left side ofthe machine, Figs. 14 and 37. is a projection, 87, which on. the forward movement of the racks, U, U.is caused to vengage and vmove a dog. 86, fastened to a shaft, S4. against the tension of a spring. 85. Mounted on the4 shaft, Blois a guard. 82, comprising a reA .d

ed strip or har seein-'eid to or, forned integral with a sleeve.y 83, loosely keyed to said shaft. The normal tendency ofsaid spring `the position lshown in Fig. I7.

is to keep the dog, 15G, and guard elevated. On eloekwise rotation of the shaft, 7. the lug. S7. will engage and more the dog, SU. and therelnl cause the. guard. 82, to restore an v ot' the latehes which may have heen depressed h v a carry from the position illustrated in Fig. lit to that illustrated in Fig. 17.

Fig. 17 shows parts of' the merhaniam alter ont` of ther pins. t). in a pin-frana. M. has heen depressed and at'ter the rack-bars. lv. l'. have eompleted part of their forward movements. The relative positionsl ot' the parts ma \4 he assumed to hareheeu originally as illustrated in Fig. 1G. The tirs-t movement ot' the rack-lanas` eauses the shafts. 7 and l. to he rotated in a eloekwise diret-- tion, and the shaft. S. to he rotated in a ooilntereloekwise diret-tion. The counteroloekwise rotation of the shaft. o. elevates the |':u'kcarrier and valises the raeks. l. to he lirought into meshing relation with the adding wheels. Q. The eloekwise rotation of the shaft. 4. cams the loekiug points. 72. hack out of their loeking engagement with said adding wheels. 'l`he` eountereloekwise rotation of the shaft. 7. restoresl an)l of the hars. 75. whieh have heen released t'rom their latrhes. 7l. as indieated in Fig. lt. to The more ment ot' the dog. Sti. hy the. lug. H7. on further rotation oi' the shalt. 7. eauses the guard. H22. to restore :in v ofthe latehes whieh have heen depressed. as indirated in Fig. 1H. to the position indieated in Fig. 17. so as to eanse them to reineage and hold their respeetive hars. 73. against the inlluenre ot' the springs. 77. when suhsequently released ln' return rotations4 ol' the shaft. 7. 'This is all etl'eeted ou the initial movement of the rarlt-hars. l`. l'. het'ore they piek up the register-driving frame and its rmlt-advane- `ing har. lt.. soms to advanee the rat-ks l.

Athe parts of the mechanism originally heen as illustrated i'n Fig. A14. the rotation ot' the shaft. 7, and movement of the dog. S6. would have been idle except that the round portion of the shaft. 7` would he brought into.

position to prevent movement of the liars. 75. by their springs. V7'?. Y The rotation'of anyof said adding wheels.

`Q, as a result ofthe forward movement of its rack. P. may cause said `wheel to he advanced from fv9. to 0. at'whieh time its project-ion. vg. would engage and depress itsteh. 7l. from the osition shownin Fig. to that shnwrrin ig, 16, in which it will 

